Prince of Gwynedd Owain ap Gruffydd
Owain was born in 1100 in Aberffraw Castle, Angelesey, Wales.¹   He died at the age of 69 in December 1169 in Carnarvonshire, Wales.  He was buried in Bangor Cathedral, Is Gwyrfai, Caernavonshire, Wales.^2 1 

 Gwladus verch Llywarch
Gwladus was born in 1098 in Pembroke, Montgomershire, Wales.¹   She died at the age of 57 in 1155.

 Margred verch Owain Gruffydd
Margred was born in 1123 in Aberffraw Castle, Angelesey, Wales.² 

 Gwenllian verch Owain
Gwenllian was born in 1125 in Caernarvonshire, Wales.² 

• Birth Notes

  B: 1120
  P: Caernarfon, Cymru
  

She died at the age of 40 in 1165.³ 

 Prince of Gwynedd Iowerth Drwyndwn ap Owain
Iowerth was born in 1129 in Aberffraw Castle, Anglsy, Wales.¹   He died at the age of 47 in 1176 in Aberffraw Castle, Anglsy, Wales.⁴ 

 Owain ap Owain
Owain was born in 1132 in Caernarvonshire, Gwynedd, North Wales.⁵ 

 Dafydd ap Owain
Dafydd was born in 1134 in Caernarvonshire, Gwynedd, North Wales.⁵ 

 Lord of Ynys Mon Maelgwyn Oychon ap Owain
Maelgwyn was born in 1136 in Caernarvonshire, Gwynedd, North Wales.⁵ 

 Rhodri ap Owain
Rhodri was born in 1138 in Caernarvonshire, Gwynedd, North Wales.⁵ 

 Cynan ap Owain
Cynan was born in 1140 in Caernarvonshire, Gwynedd, North Wales.⁵ 

 Angarad verch Owain
Angarad was born in 1143 in Caernarvonshire, Gwynedd, North Wales.⁶